Linux Foundation Executive Director Jim Zemlin has said it is time for Solaris to simply move out of the way and yield the future to Linux. 'The future is Linux and Microsoft Windows. It is not Unix or Solaris,' he claims, contending that Sun's strength in long-lifecycle apps is giving way to Linux, as evidenced by the rise of Web apps, where Linux holds a decided advantage, Zemlin claims. With capabilities such as ZFS and DTrace, Sun is trying to compete based on minor features, he says. 'That's literally like noticing the view from a third-story building as it burns to the ground.'

Yeah and NONE of those companies are running exclusively Linux. I bet if you went to each of those companies respective job listings you will find jobs regarding a myriad of other operating systems

Oh and I've actually been in the CME data centers, they have quite a bit of SPARC hardware. Most companies in the finance industry or any large company for that matter do not run on a single operating system.